Research Papers - The Geometry Center
Scientific papers written at the Geometry Center that use the unique aspects of hypertext to present information in a non-linear fashion. Many include movies or interactive pictures. A Tight Polyhedral Immersion of the Real Projective Plane with one Handle
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Resourceaholic - Joanne Morgan
Blog of teaching ideas and resources recommended by a Key Stage 5 Coordinator in a Greater London (UK) girls' grammar school. Posts, which date back to April, 2014, have included a recurring series of "math gems" as well as "Highest Common Factor and
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The Review Zone - Tina Velgos
In-depth software reviews for parents and teachers. CD-ROM Reviews in all major educational topic categories including Math and Science; also an alphabetical CD-ROM index of all titles reviewed, each title with the recommended age or grade level.
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Riding on Square Wheels - Ivars Peterson (MathTrek)
A square wheel may be the ultimate flat tire. There's no way it can roll over a flat, smooth road without a sequence of jarring bumps. However, a square wheel can roll smoothly, keeping the axle moving in a straight line and at a constant velocity, if
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Right Brained Math - Brandon Price
"Searching for divergence and creativity in all that math-y stuff." Price teaches algebra, geometry, statistics, and robotics at Austin's Khabele School, an International Baccalaureate (IB) World School. His blog, which dates back to March, 2013, has
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Robert J. Lang Origami - Robert J. Lang
Lang has catalogued and diagrammed over 400 models, combining aspects of the Western school of mathematical origami design with the Eastern emphasis upon line and form. Read about origami mathematics, which mathematically describe the underlying laws
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The Roots of the Equation - James Cleveland
Blog by a high school algebra teacher in New York City "trying to figure out how it all fits together ... [and] creating interdisciplinary problems, projects, and thinking." A Math for America (MfA) fellow, Cleveland has blogged since June, 2011, with
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Rosebush Math Line Puzzles - Math Forum
Three puzzles: 1) plant 7 rosebushes so that they form 6 straight lines with 3 rosebushes in each line. 2) plant 10 rosebushes in 5 straight lines with 4 bushes in each line. 3) plant 19 rosebushes in 9 straight lines with 5 bushes in each line. Questions,
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Rungs and Vineyards - Paul Kunkel
Investigations of two interesting visual effects seen from a moving automobile. It includes two interactive perspective drawings, and a discussion of the
cylindrical and planar projections used to create them.
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San Diego Tutor
A San Diego-based in-home tutoring company, San Diego Tutor offers a Scholarship program for clients who can't afford high school math and science tutoring.
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The Sands of Time - Troy Jones
The author uses ridges in piles of salt to model geometric concepts. This page features an article (PDF format), PowerPoint presentation, Geometer's Sketchpad file, and textbook reference for a classroom exploration of such concepts.
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Sangaku - Hiroshi Kotera
Click on the map of Japan to see photographs of sangaku -- Euclidean geometry theorems rendered as colored drawings on wooden tablets, and hung in shrines or temples -- dating to the Edo period (1603-1867). Also, learn how to use counting rods, called
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The Saqquara Ostrakon - A. D. Conner
An article with background history and a new analysis: A unique 3rd Dynasty (~2600 B.C.) Egyptian artefact thought to be an architect's drawing has heen re-evaluated by the author and the geometry reveals surprising results.
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Saturday Academy
Saturday Academy (SA) "gives kids learning experiences that get them excited about school, help them explore potential careers, discover their intellectual possibilities, and teach them to be lifelong learners." Targeting the youth and profesionals of
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Saxon Publishers, Inc. - Harcourt Achieve
Saxon publishes educational textbooks and other teaching materials for the primary and secondary education markets (Grades K-12) as well as for the home study market. The Saxon method of teaching math stresses "fundamentals." Site includes lists of inservices,
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Science and Math Initiatives (SAMI)
A database/clearinghouse of resources, funding, and curriculum for rural math and science teachers. List, search by title or description, or browse math resources by category. Originally a project of the Boulder Valley School District, Boulder, Colorado,
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science-to-touch - Jürgen Richter-Gebert
Projects for interactively visualizing science, from one of the co-authors of the Cinderella geometry software package: iOrnament, a drawing and explanation app for the 17 crystallographic wallpaper groups; ix-quadrat, a museum exhibit of symmetry, Escher,
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The Secret Garden of Maths - Micky Bullock
Blog by a secondary school maths teacher (Forest School, London, UK) that aims to provide "maths to the masses," with a preference for illustrations via GeoGebra. Bullock describes his "paranoia [as] rooted in the average person's contemptible indifference
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Seedbed - Tom O'Brien, ed.
Throughout the 1980s, Seedbed published articles on "the intellectual growth of children, and teachers' participation therein." Editor Tom O'Brien described the publication as a practical one, "where teachers are the principal authors and where teachers'
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The SELECT Math Project - Boston Public Schools
The SELECT (Supporting Engaged Learning by Enhancing Curriculum with Technology) Math Project is a Boston Public Schools resource that features over 200 links to web-based virtual manipulatives and resources that directly support the mathematics curriculum
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